Physicians may request a preliminary night study to be performed by Breathe Easy. An oximeter capable of performing night studies will then be provided to the client for a period of 1 or 2 nights. The outcome of the night study will be assessed with a report forwarded to the prescribing physician. If the night study indicates possible sleep apnea or nocturnal desaturation (low oxygen levels at night), the physician may refer you to a sleep clinic for a further assessment.